The suspended 2.7 kg mass on the right is moving up, the 1.5 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down.

The suspended 2.7 kg mass on the right is moving up, the 1.5 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down. The coefficient of friction between the block and the ramp is 0.12. The acceleration of gravity is 9.8 m/s 2 . The pulleys are massless and frictionless. What is the acceleration of the three block system? Answer in units of m/s 2 .